Electric machine.



c. F. KETTERlNG & W n. CHRYST' [ELECTRIC MACHINE. APPLICATION FILED MAY 29, Hi6.

1,284,365. Patented Nov. 12, 1918'.

CHARLES F. KETTEEJEIG' AND WILLIAM A. CHRYST, 035 DAYTQII, UHIO, ASSIGNQBS Til} TEE DAY'IQET ENGINEERING LABORATORIES GQMPANY, A CORPGRATION OF OHIO.

nnncrnrc MACHINE.

Specification of Letters -Ea tent.

Patented Nov. is, rare.

Griginal application filed March 7, 1913, Serial 1 o. 7553,733. Divided and this application filed May 29, 1916.

' Serial No. 100,610.

To all whom it may concern:

Be it known that we, CHARLES l ING and WILLIAM A. GHRYST, citizens of the United States of America, residing at Dayton, county of Montgomery, and State of Ohio, have invented certain new and'nseful Improvements in Electric Machines, of which the following is a full, clear, and exact description.

This invention relates to an improvement in electrical machines, and more particulaily to that type of electrical machine which is adapted to be combined with electrical systems, preferably used on motor vehicles a The present application is a divisional a plication of our co-pending application, s rial No. 752,733, filed March 7, 1913, for improvements in electric machines, patented June 12, 1917, Patent No. 1,229,754.

The objects and advantages of the present invention will be clearly apparent from the following description, with reference to the accompanying drawings, wherein a preferred form of embodiment of the present invention is clearly illustrated.

In the drawings:

Figure 1 is a view, partly diagrammatic and partly structural of an electric machine embodying the present invention.

Figs. 2 and 3 are detailed views of the side frame of the electric machine disassembled.

- verse space within which to mount the electrio machine. v

By referring to Figs. 2, 3 and a, it will he seen that the dynamoelectric-machine is of peculiar and novel construction and consists of two oppositely disposed side frames as and 45, which are connected at one end by an element 50, formed of magnetic material, while the opposite ends of said frames are mounted upon and secured to a mass of non-magnetic material 49, which forms a base or support for the other elements of said machine. ihe element 49 is constructed to abut against the finished surfaces 44 and 45 formed upon the lower ends of side frames 44: and H), and said element l9 cooperates with element50 to properly space the pole pieces and to rigidly maintain the side frames in proper relation.

Because of the difficulties which the present invention tends to overcome, it is advisable to conform the machine, so that while the elements comprising the frame thereof, will possess a sufiicient mass of magnetic material to create a magnetic field of desired strength, the transverse dimensions of the machine are reduced substantially to a minimum.

owever, in order to economize in space and also to reduce the. weight of the machine to a minimum, but at the same time construct a machine which will possess a sufficient mass of magnetic material to fur- I nish a field of desired strength, the side i frames are provided with a central portion, taken on a vertical plane through said. frame provided the machine is located as is shown in Fig. 1, of greater thieknessthan the portions of said frame adjacent to the extreme sides thereof.

Thus it will be seen that-that portion. of the frames which comprise the pole pieces of the machine, and through which the greatest magnetic flow will occur, is increased in mass over that portion ofthe frame which constitutes simply an inclosure for the machine.

From the above, it will be seen that the side frames of the dynamo-electric-machine embody the pole pieces of the machine. This not only causes a reduction in the weight of the entire machine, but also greatly facilitates the construction of the same from a manufacturing standpoint, inasmuch as it is possible to cast or forge the side frames and pole pieces of the machine integral and thus avoid the usual multiplicit of machine and assembling operations.

By having the elements, which connect the upper extremities of the sideframes together, also form the supporting means for the field windings which are assembled in a single unit 49,- it is possible togreatly reduce the number of elements which make up the machine and this greatly facilitates the manufacturing and assembling of the machine.

Certain of the terminals. 52 of the field winlings are connected to binding posts 53, carried by the ooverfi, (see F ig. 4). In the above mentioned figure,'there is only a single terminal and a sin 1e binding post shown. In order to facili ate the coupling up of the terminals of the coil and the hinding'posts carried by the cover, one of the side frame's' l is flared outwardly at its upper end and forms a supporting surface the cover 54:. It will be noted that the supporting surface of the side frame 44 cooperates with the cover 54: to form an iii-- clesnre for the Connection of the terminals with the electric connections carried by the coves;

gWhile. the form of mechanism herein shown and described, constitutes a preferred rcr of embodiment of the inyentlon it is essence to be understood that other forms 1 adopted all coming Within the scope of claim which follows.

What We claim is as follows:

In a device of the character described, an electric machine having oppositely '90 side frames; an element connecting said frames; a coil mounted on said connecting element, said coil having it plurality of en ininels; e cover fer said electric machine; a plurality ofelectrical connectie by'said cover; one oi said side ing flared outwardly at one end, the upper surfaces or" the flared-out end the co cooperating to form an inclosnre for connection of the terminals Wits the t he trigal eom eetions carried by the cover.

In testimony whereof We our sipnw tunes in the presence of two subscribing w 16 nesses. I c

' WILLIAM A CHRYST,

Witnesses:

J. W. McDoNAtii, O. D. 

